Gas-burning, heating and cooking stove.



No'. 834.223. PATBNTEDOGT'. 23, '1906; I

' V. W. BLANCHARD.

GS BURNING, HETING AND COOKING STOVE.

.APPLICATION FILED JAN. 22, 1906.

INVENTOR zy/MM,

W/VTNESSES: y

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. UNITED sTATEs PATENT oEEIoE.

viReii. w. BLANCHARD, or NEW YORK, N. `'C-A-"BUJENING., HEATING 'AND COOKING Sfrovl.

*Nia 834,223.

Specification roff Letters atent.

pplication liled'January '22, T906. Serial No, 297,257.

retained oct. 2:3, leo'e.

` York yand State of New York, have invented certain )new and useful Improvements in Gas-Burning, Heating kand Cooking Stoves; andI hereby declare that the following is la full, clear, and 'exact description thereof,

reference bein had to the accompanying drawings, whic form part of this specification.

This invention is an improvement in gasburning, heating and cooking stoves, but more particularly designed for cookingstoves. Its objects are to enable the flow of the gases to be readily controlled in their passage from the burner, to provide a novel heating-plate adapted to become very highly heated by the products of combustion and to radiate its heat directly upward in the most advantageous manner against the superimposed cooking vessel, if desired, and also to form, with the underlying air supplying plate, means for insuring thorough oxidation of the gaseous products of combustion.

The invention in particular is an improvement upon the stove shown in my application for gas cooking-stoves, Serial No. 297,250, filed January 22, 1906 atraco-d, from the following desea am, in connection with the accompanying rawings, in which- Figure 1 is aA horizontal sectional view on line 1 1, Fig. 2; and Fig. 2 is a vertical sec.- tion of the upper portion of the stove, show- .ing the parts embodying the present invention.

The casing of the stove is preferably double-walled, so as to prevent loss ofvheat by conduction and radiation, and is also preferably cylindrical in cross-section. In the upper part of this casin is a transverse perforated partition-plate ,from which is suspended a centrally-disposed burner C, provided with perforations c in its sidesand internal constrictions c and with a hood c2 on its lower end, into which gaseous mixtures are discharged from mixing-tubes D. This burner and mixing-tubes are preferably constructed as described in my application for gas-burners, Serial No. 297 ,240, filed January 22, 1906, and need not be further explained in detail herein. It is ada ted to produce perfect combustion of all the el elements and'to dischar e large volumes of heated products above t e partition B, which and will be fully un' products are mixed with yquantities Qof air entering through the perforations b in partition B. Preferably this partition B yhas a series of annular upstanding ribs b on its upper surface for a purpose hereinafter explained; The said gases escape from the upper part of the stove through an youtlet a at l one side thereof into a range extension E, which is preferably constructed fas described in my application for gas cooldng stoves or ranges, Serial No. 297,251, iiled January 22,1906.

Arranged at the lower edge of the outlet a and above the partition B is a transverselyarranged plate F. This, as shown, may approximately conform in contour to the internal cross-section of the stove but at the side opposite the outlet a an outlying space or flue a is left between the edge of the plate F and the inner wall of the stove. At the side adjacent to outlet a partly cylindric slots a2 are formed in the plate, through which gases may pass vdirectly to outlet a. The plate F is preferably provided on its under side with downwardly-extending annular ribs or flanges', which preferably alternate in position with the upstanding flanges b on partition B. The flanges f form pockets or chambers on the under surface of plate F,

ucts of combustion arising from the burner and insure the thorough oxidation of the lighter elements in the ases, which might possibly escape if afforded a direct outlet.

By means of the Hangesf and b the gases are caused to take an upward and downward or tortuous course, as indicated by the par# rows, in (passing from the burner under plate F towar the sides of the stove, and in such passage they are subjected to the action of and commingled with jets of fresh air rising through perforations b in partition B.

On `top of partition F, I lace a double-actingT damper or valve whic is provided with a ont portion G, adapted when the valve is drawn outwardl to cover the opening or flue-space a, an `on its inner side with a ortion g, adapted when the valve is pushe inward to cover the slots or flue-openings a2, so when one opening is closed the other is open, and vice versa; but by moving the valve to an intermediate position both openings a and a2 might be left partly open.

The valve is preferably annular and surrounds an opening in the up er art of plate F, which can be closed by aIlid F2, which lid can be removed in case it be desired to place IOO IIO

y wholly close openings a2 or partly or wholly and a central opening, a lid covering such a utensil upon plate F within the stove to be heated. Y

The valve G may be provided with slots g', transfixed by pins j' 2, attached to plate F, so that the valve will be roperly guided in its movements, and it can e operated by a pullrod G, extending through an aperture in the front wall of the stove.

In the top of the stove, above plate F, may be an opening closed by nested lids H, any one of which can be removed to accommodate a vessel of corresponding size, and in the range extension similar openings may be provided. The heated gases pass directly from the stove to and through the range portions, as described in my application for gas cooking stoves and ranges, Serial N o. 297,251, iled January 22, 1906,

The burner, partition B, and plate F and valve G all become highly heated, particularly the portions of the plate F directly over the burner, and will be maintained at a bright red heat, so that the upper parts of the stove and vessels placed thereon can be quickly and highly heated by radiation from the said plate. If the vessel be placed over the adj acent opening in the top of range E, by fixing the valve in the position shown in Fig. 2 the l heated gases will be dischar ed almost directly into the range and un er such vessel through the openings a2 and a', while the vessel placed on top of the stove above the plate F will be heated by radiation from said plate.

If it be desired to increase the temperature of lids H or vessels substituted therefor, the valve G may be pushed inward to partly or open opening a, so that the gases will be discharged directly upward against the top of the stove before passing into the range extension. By this means I am able to control the heat in the most advantageous manner.

Having thus described my invention, what I therefore claim as new, and desire to secure by Letters Patent thereon, is

1. In a gas-burning stove, the combination of a burner, a plate superimposed above the burner having openings for the escape of the heated gases, and a depending annular fiange adapted to detain the products of combustion, and a slide-valve mounted on said plate adapted to control the flow of heated gases.

2. In a gas-burning stove, the combination of a burner, a plate superimposed above the burner having side openings, a depending annular flange adapted to detain heated gases,

central opening, and a sliding valve mounted on said plate adapted to control the flow of heated gases through the side openings.

3. In a gas-burning stove, the combination of a burner, a plate superimposed above the burner, passages or openings at the front and rear sides of the plate, and an annular slidevalve resting on the plate adapted toclose either of said openings and simultaneously open the other.

4. In a gas-burning stove, thecoinbination of a burner, a plate superimposed above the burner provided with a central opening, and

1 gas-passages at front and rear of said plate, a

lid across said central opening, and an annuf lar sliding valve resting on the plate adapted to close either of the passages and open the I other.

5. The combination in a gas-burning stove, of the casing, a partition suspended therein, a burner connected with said partition, a plate above the partition arranged to leave iiues for products of combustion around its edges and a valve supported on said plate` adapted to close the lue at one side of the plate and simultaneously open the ilue at the other side thereof 6. The combination in a gas-burning stove, of the casing, a perforated partition suspended therein, a burner connected with said partition and discharging above the saine, a plate above the partition arranged to leave ues for products of combustion around its edges, and a sliding valve supported on said plate adapted to close the iue at one side of the plate and simultaneously open the I'lue at the other side thereof.

7. The combination in a gas-burning stove, of the casing, a'- partition therein provided with upstanding, annular iianges, a burner, an `outlet for the products of combustion, a plate located above the partition and below the outlet and provided with depending annular ribs, and passages for the escape of gases at front and rear of the plate, a sliding valve mounted on said plate and means for moving said valve, whereby either passage may be o ened and simultaneously the other passage c osed;

8. In a gas-burning stove, the combination of a casing, a perforated partition therein provided with upstanding annular flanges, a burner suspended from said partition and adapted to discharge the products of combustion above the same, an outlet for the products of combustion above the partition, a plate located above the artition and below the outlet, and provided) with depending annular ribs, a sliding valve mounted on said plate and means for moving said valve.

In testimony that I claim the foregoing as my own I aifix my signature in presence of two witnesses.

VIRGIL W. BLANCHARD.

In presence of T.'H. ALEXANDER, JAMES R. MANSFIELD.

ILO

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